Sökning: "Amygdala"

Visar resultat 21 - 25 av 108 avhandlingar innehållade ordet Amygdala.

  1. 21. Neurobiological basis of the nicotine withdrawal reaction : an experimental analysis

    Författare :Bengt E Hildebrand; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :rat; nicotine; nicotine withdrawal; behavior; locomotor activity; microdialysis; intracerebral injections; mesolimbocortical; dopamine; ventral tegmental area; nucleus accumbens; amygdala; immediate-early genes; c-fos;

    Sammanfattning : The mesolimbocortical dopamine (DA) system is pivotal for the mediation of the reinforcing effects of many dependence-producing drugs. It consists of cell bodies in the ventral tegmental area (VTA) that project to e.g. the nucleus accumbens (NAC), the central nucleus of amygdala (CNA) and the medial prefrontal cortex. LÄS MER

  3. 22. Factors affecting alcohol self-administration : learning, environmental and genetic influences on behaviour

    Författare :Christopher Pickering; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :ethanol; operant self-administration; addiction; reward; learning; lever press response; context; environmental cue; novelty; stress; glutamate; GABA; noradrenaline; PCR; gene expression; functional genomics; prefrontal cortex; hippocampus; amygdala;

    Sammanfattning : Alcoholism is a serious problem for society and is a very difficult disease to treat clinically. Often, the addict has periods of abstinence from alcohol followed by relapse to drinking and this cycle of use/non-use can repeat over many years. LÄS MER

  4. 23. Essays on belief formation and pro-sociality

    Författare :Erik Mohlin; Handelshögskolan i Stockholm; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : This thesis consists of four independent papers. The first two papers use experimental methods to study pro-social behaviors. The other two use theoretical methods to investigate questions about belief formation. The first paper “Communication: Content or Relationship?” investigates the effect on communication on generosity in a dictator game. LÄS MER

  5. 24. Imaging Anxiety : Neurochemistry in Anxiety Disorders Assessed by Positron Emission Tomography

    Författare :Andreas Frick; Mats Fredrikson; Tomas Furmark; David J Nutt; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Fear; Brain; Serotonin; Neurokinin; Substance P; Psychology; Psykologi;

    Sammanfattning : Anxiety disorders, including social anxiety disorder (SAD) and posttraumatic stress disorder (PTSD) are common and disabling conditions. Largely based on animal and pharmacological studies, both the serotonergic and substance P/neurokinin-1 (SP/NK1) systems have been implicated in their underlying pathology. LÄS MER

  7. 25. Brain Stem Involvement in Immune and Aversive Challenge

    Författare :Jakob Paues; Anders Blomqvist; Finn Hallböök; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; lipopolysaccharide; Lithium Chloride; anorexia; aversion; parabrachial; brain stem; melanocortin; CGRP; enkephalin; Neurobiology; Neurobiologi;

    Sammanfattning : Activation of the immune system by e.g. bacteria induces the acute-phase-response and sickness behaviour. The latter encompasses among other things fever, lethargy, anorexia and hyperalgesia. LÄS MER